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    <script>
        //includes  indexOf
        const masterWork = ['西游记', '水浒传', '红楼梦', '三国演义'];
        console.log(masterWork.includes("西游记"));
        console.log(masterWork.includes("金瓶梅"));

        //**
        console.log(2 ** 10);//Math.pow(2,10);2的10次方

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